<!DOCTYPE html>
<html>

<head>
  <meta charset="UTF-8" />

  <link rel="stylesheet" type="text/css" href="./scroll.css" />
</head>

<body>
  <div style="width:10000px; height:1000px">
    Hi scrollbar!
  </div>
<!-- http://jsfiddle.net/thirtydot/kTsUc/886/ -->
<!-- https://webkit.org/blog/363/styling-scrollbars/ -->
<!-- https://segmentfault.com/a/1190000012800450 -->
</body>

</html>